86191251663 has 16 divisors (see below), whose sum is σ = 125497460736. Its totient is φ = 52183635840.

The previous prime is 86191251637. The next prime is 86191251689. The reversal of 86191251663 is 36615219168.

It is an interprime number because it is at equal distance from previous prime (86191251637) and next prime (86191251689).

It is not a de Polignac number, because 86191251663 - 2¹⁴ = 86191235279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86191251763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1304431 + ... + 1368912.

It is an arithmetic number, because the mean of its divisors is an integer number (7843591296).

Almost surely, 2^86191251663 is an apocalyptic number.

86191251663 is a deficient number, since it is larger than the sum of its proper divisors (39306209073).

86191251663 is a wasteful number, since it uses less digits than its factorization.

86191251663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674334.

The product of its digits is 466560, while the sum is 48.

The spelling of 86191251663 in words is "eighty-six billion, one hundred ninety-one million, two hundred fifty-one thousand, six hundred sixty-three".